Indonesia’s Anak Krakatau Eruption Strands 340,000, Closes Airports

Indonesia’s Anak Krakatau volcano erupted late Friday, sending ash across Jakarta and surrounding provinces and forcing seven airports to close. Nearly 3,000 flights were disrupted and more than 340,000 passengers stranded for two days. Five airports reopened by Tuesday morning, but rescue teams continue searching for eight people missing near the volcano as volcanic activity persists.

The eruption and airport chaos

Anak Krakatau began erupting late on Friday, producing lava fountains and sending volcanic ash into the capital city Jakarta and the Lampung province. Nearly 3,000 flights were disrupted and more than 340,000 passengers were left stranded. Jakarta’s Soekarno-Hatta International Airport was the first to close on Sunday morning and did not reopen until 00:30 on Tuesday. Snaking queues formed at departure halls as stranded passengers sought refunds and updates. One passenger, Finna, spent the night on two intercity trains to reach Jakarta rather than wait for flight rescheduling.

Volcanic ash spread and health concerns

Ash from Anak Krakatau, which sits halfway between Java and Sumatra islands, blanketed Jakarta and several surrounding areas. The Geological Agency recorded ash towers reaching 50,000 feet in some areas. Authorities issued health warnings and imposed remote learning in affected regions. Residents swept dusty floors and blackened walls of homes and mosques as the ash settled. The volcano sits on the Pacific Ring of Fire, where Indonesia is home to over 120 active volcanoes.

Anak Krakatau’s history and current status

Anak Krakatau means child of Krakatau and emerged a century ago from the area occupied by the older Krakatau volcano, which erupted catastrophically in 1883 and killed more than 36,000 people. A tsunami after an eruption at Anak Krakatau in 2018 killed over 400 people. Indonesia’s disaster management agency says Anak Krakatau does not currently have the potential to collapse on a scale that could trigger a tsunami. The volcano’s alert level was raised to Level III on July 2, 2026, after SO2 emissions and thermal anomalies were detected from June 1.

Ongoing search and earthquake clarification

Rescue teams continue searching waters and islands around the volcano for eight people reported missing. A deep M6.6 earthquake struck the Java Sea on September 12, but geological analysis shows it did not trigger the eruption. The earthquake originated 360 to 370 kilometres beneath the surface, roughly 180 to 200 kilometres away horizontally from the volcano. Anak Krakatau had already been erupting continuously from September 4 to 6, six days before the earthquake struck.

Final Thoughts

The eruption has disrupted Indonesia’s air transport and stranded hundreds of thousands, but airports are reopening as ash clears. Authorities confirm no immediate tsunami risk, though rescue operations continue and the volcano remains under close monitoring.

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